MaxxECU STREET: The Standalone ECU Most Street Builds Actually Need
MaxxECU STREET: The Standalone ECU Most Street Builds Actually Need
Quick answer: MaxxECU STREET is the volume seller of the MaxxECU range and the point at which the range becomes genuinely complete. It runs up to 6 cylinders fully sequentially (up to 12 in wasted spark), has a built-in wideband lambda controller that takes a Bosch LSU 4.2 or 4.9 sensor wired directly to the ECU with no external box, and a built-in 400 kPa MAP sensor for 3 bar / 43.5 PSI of boost. Six injector outputs, six ignition outputs, four general-purpose outputs, two trigger inputs and 8 MB of 1000 Hz internal logging in a 520 g aluminium case. It does not have drive-by-wire outputs, Bluetooth, knock inputs or EGT inputs — those start at SPORT and RACE.
Rocket Speed Shop is the official MaxxECU distributor for the Baltics. Here is what the STREET does, who it fits, and where its limits are.
Who the MaxxECU STREET is for
STREET is the default choice for a fast road car, a club-level track car or a well-sorted drift or drag build with a cable throttle. It suits:
- Turbocharged 4 and 6 cylinder builds — 2JZ, RB25/RB26, M50/M52, 1JZ, 4G63, SR20, B-series, T5. Six sequential injectors and six coils covers all of them.
- Anyone who wants closed-loop lambda control. The internal wideband is the single biggest reason to choose STREET over MINI. Lambda correction, autotune and safety cuts all work from a sensor plugged straight into the ECU.
- Engine swaps where a factory ECU was never going to work and a plug-in solution does not exist for the combination.
- V8 and V12 wasted-spark builds — up to 12 cylinders in wasted spark mode.
- Flex-fuel conversions — E85 blending, flex fuel tables and ethanol content compensation are built in.
The one thing that rules STREET out is a drive-by-wire throttle body. If your engine has one, you need SPORT or higher. There is no workaround.
Key features
Built-in wideband lambda controller
Supports Bosch LSU 4.2 and 4.9 sensors connected directly to the ECU — no separate controller box, no analog voltage translation, no extra failure point. This enables closed-loop lambda control, lambda fuel correction, lean power cut protection and MTune's local autotune, all of which are effectively unavailable on the MINI.
Built-in 400 kPa MAP sensor
Reads to 3 bar / 43.5 PSI of boost with a supplied push-lock hose kit. One less sensor to mount, wire and calibrate.
Two trigger inputs on a dedicated processor
Both accept VR or digital signals with automatic level detection. Crucially, trigger signals are handled by a completely separate processor from the main CPU — that is what gives MaxxECU its reliability at high RPM and its immunity to ignition interference. Cam and crank sensors are both covered, so VVT engines sync properly.
The full motorsport feature set
Three-stage launch control, rolling launch, anti-lag, shift-cut, traction control with power management, triple-stage closed and open loop boost control with compensation tables, boost level switching, nitrous control, VANOS/VVTi variable valve control, overrun fuel cut, closed-loop anti-stall, flex fuel, injector staging, per-cylinder fuel trim, speed limiters and CO2 wastegate control. None of this is locked behind a higher model.
Logging and diagnostics
8 MB of internal logging at up to 1000 Hz with automatic start/stop on user conditions, plus 20 Hz PC logging over a fast USB connection. MTune includes a built-in trigger oscilloscope and trigger logger, which makes diagnosing a difficult crank/cam pattern dramatically easier.
CAN gearbox and vehicle integration
CAN control of BMW DCT, VAG DSG and GEN1 ZF 8HP gearboxes; direct solenoid control of GM 4L60E/4L65E/4L80E/4L85E and Toyota A340E/A341E/A650E; sequential gearbox control; OEM vehicle CAN and OBDII. Note that on STREET the CAN bus requires additional wires beyond the standard harness.
MaxxECU STREET full specifications
| Specification | MaxxECU STREET |
|---|---|
| Target engines | All 1–12 cylinder, 2 and 4 stroke |
| Sequential cylinders | Up to 6 |
| Wasted spark cylinders | Up to 12 |
| Injector outputs | 6 (high impedance only) |
| Ignition outputs | 6 (5 V signal) |
| General purpose outputs | 4 — GPO 1–3 (2 A), GPO 8 (5 A) |
| Built-in MAP sensor | 400 kPa (3 bar / 43.5 PSI boost) |
| Wideband lambda controller | Built in — Bosch LSU 4.2 / 4.9 |
| Trigger inputs | 2 (VR or digital, separate processor) |
| Extra temperature inputs | 2 |
| Extra analog inputs | 2 × 0–5 V |
| Digital inputs | 2 (Hall speed sensors or switches) |
| Dedicated sensor inputs | IAT, CLT, TPS |
| Knock sensor inputs | Not included |
| EGT inputs | Not included |
| E-Throttle (drive-by-wire) | Not included |
| Bluetooth | Not included |
| CAN bus | 1 × CAN (additional wires required) |
| PC communication | USB |
| Internal logging | 8 MB, up to 1000 Hz |
| PC logging | 20 Hz over USB |
| Processor | ARM Cortex-M3 120 MHz |
| Calculation rate | 2000 fuel/ignition calculations per second |
| Ignition resolution | 0.1 degrees |
| Injector resolution | 0.001 ms |
| Supply voltage | 8–22 V |
| Dimensions | 140 × 134 × 42 mm (incl. mounting points, excl. connector) |
| Weight | 520 g |
| Enclosure | Aluminium |
Should you upgrade or downgrade?
Downgrade to MINI if…
Your engine has 4 cylinders or fewer, you already run a wideband gauge with its own controller, and you need the physical package to be as small as possible. MaxxECU MINI is 245 g against 520 g and considerably cheaper. You give up the internal wideband, two cylinders of sequential capability, one trigger input, two temperature inputs and two analog inputs. For a small, simple, budget-constrained build that is a reasonable trade.
Upgrade to SPORT if…
Any one of these applies:
- Drive-by-wire throttle. SPORT has two E-Throttle motor outputs. STREET has none. This alone forces the upgrade on most modern engines.
- Low-impedance injectors. SPORT uses peak-and-hold drivers rated 8 A per output and takes 1–2 high or low impedance injectors per output. STREET is high impedance only.
- Bluetooth and the MDash app. SPORT adds built-in Bluetooth for wireless dash and logging on Android.
- More spare I/O. SPORT has 6 extra 0–5 V analog inputs against STREET's 2, and 7 general-purpose outputs plus 2 motor outputs against STREET's 4.
Upgrade to RACE if…
You need knock detection or exhaust gas temperature monitoring. MaxxECU RACE adds 2 knock sensor inputs and 8 TYPE-K/N EGT inputs, plus 8 sequential cylinders, 8 injector and 8 ignition outputs, and a waterproof H2O variant. For a high-boost engine on pump fuel, knock control is cheap insurance.
Upgrade to GEN2 TRACK if…
You want the newest platform rather than more channels. MaxxECU GEN2 TRACK brings IP68 waterproofing, WiFi tuning, Bluetooth, a 550 kPa MAP sensor (4.5 bar), dual wideband lambda with Bosch LSU 5.2 support, dual knock, 8 GB of full-channel logging, Lua scripting and 8× larger tables. It is a generational step, not an incremental one.
What to buy alongside a MaxxECU STREET
- MaxxECU Expansion Module — the answer when you have run out of inputs but not out of injector drivers. Adds 12 analog inputs, 4 pulse inputs, 4 × 12 V outputs and 4 H-bridges over CAN, all configured inside MTune. Far cheaper than jumping to a bigger ECU for I/O alone.
- MaxxECU PDM20 — replaces the fuse box and relay bank with 20 programmable, current-monitored, PWM-capable outputs. Worth it on any car being rewired from scratch.
- Terminated engine harness — for 2JZ, BMW M50, Volvo T5 and GM LS swaps, with OEM connectors already fitted.
- Plugin ECU adapter — for supported cars, plugs into the factory ECU connector with no cutting.
- Bosch LSU 4.2 or 4.9 sensor — the PREMIUM kit includes an LSU 4.2 and its connector; the STANDARD and unit-only kits do not.
Frequently asked questions
What is the difference between MaxxECU STREET and MINI?
STREET adds a built-in wideband lambda controller, 6 sequential cylinders instead of 4, 6 injector and ignition outputs instead of 4, a second trigger input, 2 extra temperature inputs and 2 extra analog inputs. The wideband is the decisive difference for most buyers.
What is the difference between MaxxECU STREET and SPORT?
SPORT adds E-Throttle drive-by-wire outputs, built-in Bluetooth, peak-and-hold injector drivers that handle low-impedance injectors, 6 extra analog inputs instead of 2, and 7 general-purpose outputs instead of 4. Both run 6 cylinders sequentially and both have a built-in wideband.
Can MaxxECU STREET control a drive-by-wire throttle?
No. STREET has no E-Throttle motor outputs. You need SPORT, RACE, GEN2 TRACK, GEN2 RACE or PRO.
Can MaxxECU STREET run a V8?
Yes, in wasted spark mode — up to 12 cylinders. For a V8 running fully sequentially you need RACE, GEN2 TRACK, GEN2 RACE or PRO.
Does MaxxECU STREET support E85 and flex fuel?
Yes. Flex fuel with an ethanol content sensor is a standard feature, including fuel and ignition compensation tables.
Does MaxxECU STREET have knock control?
No. Knock sensor inputs start at RACE and are also on GEN2 TRACK, GEN2 RACE and PRO.
Where can I buy a MaxxECU STREET in the Baltics?
Rocket Speed Shop is the official MaxxECU distributor for Estonia, Latvia and Lithuania. Authorised-dealer purchase gets you warranty coverage, current firmware and local technical support.
Explore the rest of the MaxxECU range
MINI · SPORT · RACE · GEN2 TRACK · GEN2 RACE · PRO · PDM20 · Expansion Module.